I have a 12 plate Twizy 10,000 miles never get more than 40 miles on a run and the predicted miles from start is never more than 35-40 miles… How can you tell when the battery needs replacing?
My Twizy is same age and does about the same. It is a good question, how do we define the battery condition to then claim a new one?
Winter is coming…
@Jimmychoo270 sounds about right. Expect sub 30miles in Winter.
The battery contract states they don’t replace but repair to bring it back to being over 75% (some say 70%) so only the worst or failed modules would be replaced.
How to tell - No easy way. Do you know what it used to do for the same trip in the same temps and conditions? This will give a very rough idea of how much it has changed.
ie. Used to do 50miles and now does 40miles is 20% loss (subjective only view) which still isn’t enough to trigger a battery repair. I suggest that you would need to see a lot more than 25% range loss before getting Renault to look at it.
Just my thoughts others my know better.
typical battery capacity loss is around 1-2% per year and mileage doesn’t seem to factor in much.
Regular usage seems to maintain battery capacity.
I’m a low mileage user (7K miles) with a 2012 model which has lost about 5% capacity , checked with the powerbox.